<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./js/vue.js"></script>
    <style>
        #app{
            width: 800px;
            margin: 20px auto;
        }
        h2{
            text-align: center;
        }
        .tabs{
            display: flex;
            margin-bottom: 20px;
        }
        .tab{
            cursor: pointer;
            margin-right: 20px;
            border: 1px solid;
            width: 80px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            font-size: 20px;
        }
        .focus{
            background: rgb(162, 131, 116);
            color: #fff;
        }
        .book{
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 160px;
        }
        .book-name{
            margin-top: 10px;
            height: 42px;
        }
        .book-price{
            color: red;
        }
        .books{
            display: flex;
            justify-content: space-between;
        }
    </style>
</head>

<body>
<div id="app">
<h2>每日精选</h2>
<div class="tabs">
    <div class="tab focus" @mouseenter="changeBooks('hot',$event)">热销</div>
    <div class="tab" @mouseenter="changeBooks('tec',$event)">科技</div>
</div>
<div>
    <book-list :list="list"></book-list>
</div>
</div>
</body>
<script type="text/x-template" id="book">
    <div class="book">
        <img :src="book.pic" class="book-pic" width="160">
        <div class="book-name">{{book.name}}</div>
        <div class="book.price">￥{{book.price}}</div>
    </div>
</script>

<script type="text/x-template" id="book-list">
    
    <div class="books">
        <book v-for="item in list" :book="item"></book>
    </div>
</script>

<script>
    Vue.component('book', {
        template: '#book',
        props: ['book']
    })
    Vue.component('book-list', {
        template: '#book-list',
        props: ['list']
    })

    const vm = new Vue({
        el: '#app',
        data: {
                books: {
                    hot: [{
                        name: '周大新：安魂',
                        price: '26.90',
                        pic: 'ah.Webp'
                    },
                    {
                        name: '开端',
                        price: '49.80',
                        pic: 'kd.Webp'
                    },
                    {
                        name: '长岛小记',
                        price: '33.80',
                        pic: 'cdxj.Webp'
                    },
                    {
                        name: '沙丘全套 六部曲',
                        price: '394.90',
                        pic: 'sq.Webp'
                    },
                    {
                        name: 'C Primer Plus',
                        price: '76.20',
                        pic: 'c.Webp'
                    },
                    {
                        name: 'Linux就该这么学',
                        price: '94.60',
                        pic: 'linux.Webp'
                    },
                    {
                        name: '关于火星的一切',
                        price: '39.40',
                        pic: 'linux.Webp'
                    },
                    {
                        name: '植物的战斗',
                        price: '49.00',
                        pic: 'zw.Webp'
                    }]
                },
                list:[]
            },
            methods: {
                changeBooks:function(type,event){
                    this.list=this.books[type]
                    let tabs=document.querySelectorAll('.tab')
                    for(let i=0;i<tabs.length;i++){
                        tabs[i].classList.remove('focus')
                    }
                    let tab=event.add('focus')
                }
            },
            mounted () {
                this.list=this.books['hot']
            }
    })
</script>

</html>